Inscription

on verso: R Mangold 1975 Two Triangles within a square #2

Provenance

Dorothy and Herbert Vogel, New York, NY; purchase/gift to NGA, 1991.

Exhibition History

1982

20th Anniversary Exhibition of the Vogel Collection, Brainerd Art Gallery, State University College of Arts and Science, Potsdam, New York; Gallery of Art, University of Northern Iowa, Cedar Rapids, 1982-1983, unpaginated, no cat. nos.